DISTRICT OF COLUMBIA CDL AIR BRAKES PRACTICE TEST
11.
Radial and bias-ply tires:
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should be used together only during bad weather.
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should be used together.
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should be used together only when driving in packed snow.
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should not be used together.
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12.
When backing a trailer, turn the wheel right to make the cab go ________ and the trailer go ________.
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right; right
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left; right
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left; left
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right; left
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13.
If you perform the skills test in a vehicle that is not equipped with air brakes:
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you will be required to operate vehicles with air brakes.
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you will be restricted from operating vehicles with air brakes.
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you will be required to operate a CMV without hydraulic brakes.
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you will be required to take the tank vehicle test.
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14.
ABS helps you:
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avoid wheel lock up and maintain control of your vehicle when you brake.
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steer gently and smoothly while you are braking.
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stop much faster.
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increase your normal braking capability.
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15.
The emergency brake system:
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uses the service brake to stop the vehicle in the event of a parking brake system failure.
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uses the parking brake to stop the vehicle in the event of a brake system failure.
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uses parts of the service and parking brake systems to stop the vehicle in the event of a brake system failure.
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None of the above.
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